Advertisements
Advertisements
प्रश्न
Write Kolbe’s reaction.
उत्तर
The treatment of sodium phenoxide with carbon dioxide at 398 K under the pressure of 6 atm followed by acid-hydrolysis, salicylic acid (o-hydroxybenzoic acid) is formed. This reaction is known as Kolbe’s reaction.
APPEARS IN
संबंधित प्रश्न
Answer in one sentence/ word.
Hydroboration-oxidation of propene gives _________.
Answer in one sentence/ word.
Write the IUPAC name of alcohol having molecular formula C4H10O which is resistant towards oxidation.
Answer in brief.
Explain why phenol is more acidic than ethyl alcohol.
Answer in brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
An ether (A), C5H12O, when heated with excess of hot HI produce two alkyl halides which on hydrolysis form compound (B) and (C), oxidation of (B) gave and acid (D), whereas oxidation of (C) gave a ketone (E). Deduce the structural formula of (A), (B), (C), (D), and (E).
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
How will you bring about the following conversions?
isopropyl alcohol to acetone
What is the action of conc. H2SO4 on carbolic acid at 373 K.
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
Number of oxygen atoms present in salicylaldehyde are ______.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Cumene is used in the commercial method for the manufacture of ____________.
\[\ce{CH3 - CH = CH2 ->[HBr][Peroxide] A}\]
Identify A.
In Dow process, chlorobenzene is converted into phenol by ____________.
+I effect of alkyl groups in alcohols increases the stability of ____________.
The most resistant alcohol towards oxidation reaction is:
Which among the following compounds is used to prepare solid fuel using calcium acetate?
Which of the following on oxidation yields ethyl methyl ketone?
Identify product B in the following conversion?
\[\ce{Phenol ->[NaOH] A ->[CH3I] B}\]
Identify the alcohol that reacts immediately with Lucas reagent?
A reaction of phenol with chloroform in presence of sodium hydroxide to form salicylaldehyde is known as ____________.
Name the catalyst used in commercial method of preparation of phenol.
Identify the compound amongst the following of which 0.1 M aqueous solution has highest boiling point.
Amongst the following alcohols which would react fastest with cone. HCl and ZnCl2?
What is the action of nitrous acid on aniline?
Explain: Phenols are acid while alcohol is neutral.
Convert the following :
cumene to phenol.
